Log guest errors in Qemu #257

Job	Run time
build_attest_all (buildconfigs/key_xor_test_app.sh)	4m 37s
build_attest_all (buildconfigs/oak_client_android_app.sh)	26m 24s
build_attest_all (buildconfigs/oak_containers_agent.sh)	6m 13s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	4m 16s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	9m 18s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	6m 57s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	7m 35s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	14m 32s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	16m 26s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	4m 32s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	3m 52s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	4m 12s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	4m 49s
build_attest_all (buildconfigs/oak_orchestrator.sh)	3m 50s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_init_rd_wrapper_bin.sh)	5m 29s
build_attest_all (buildconfigs/stage0_bin.sh)	4m 51s
	2h 7m 53s

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